CN206668618U - A kind of fan blade, fan and double fan blade fans - Google Patents
A kind of fan blade, fan and double fan blade fans Download PDFInfo
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- CN206668618U CN206668618U CN201720120414.7U CN201720120414U CN206668618U CN 206668618 U CN206668618 U CN 206668618U CN 201720120414 U CN201720120414 U CN 201720120414U CN 206668618 U CN206668618 U CN 206668618U
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Abstract
It the utility model is related to force ventilation field, there is provided a kind of fan blade, fan and double fan blade fans.Wherein, the edge windward of fan blade of the present utility model is in Wave curved shape, and along the blade root of the fan blade to the direction of blade tip, the edge windward gradually tilts toward the rotation direction of the fan blade.Because the edge windward of fan blade is in Wave curved shape, so as to form multiple vortex at edge windward, the noise of fan blade is reduced.On this basis, due on the direction of the blade root along the fan blade to blade tip, the edge windward gradually tilts toward the rotation direction of the fan blade, so as to which the multiple vortex in fan blade rotation process, formed windward at edge can not interfere organically towards the motion of wheel hub blade root.Thus, the air-out of the fan blade apart from it is farther, air output is bigger, and can more meet requirement of the user to the soft comfortableness of air-out.
Description
Technical field
It the utility model is related to force ventilation field, more particularly to a kind of fan blade, fan and double fan blade fans.
Background technology
Natural wind is soft comfortably, does not hurt sb.'s feelings, and is favored by consumers in general, also falls over each other the target pursued as industry.It is existing
There are double fan blade fans of technology, because it can reappear natural wind to a certain extent, and with Jing Yin, energy-conservation and easy to use
The features such as, therefore liked by consumer.The structure of most common double fan blade fans is shown in Fig. 1, it has double-layer wind
Leaf, namely internal layer fan blade 1 and outer layer fan blade 2.Wherein, the structure of internal layer fan blade 1 refers to Fig. 2.
Above-mentioned double fan blade fans have the drawback that, its air quantity is small, the wind speed of internal layer fan blade 1 is low, year-on-year high noise and unit price
Costliness, it thus limit the popularization in its market at home.
On this basis, prior art proposes a kind of double fan blade fans, refers to Fig. 3 and Fig. 4, its He of internal layer fan blade 1
The edge windward 4 of outer layer fan blade 2 namely face wind side are provided with some serrated slots, and obtain bigger ventilation with this and longer go out
Wind distance.Meanwhile the setting of sawtooth causes the face wind side of fan blade to form some small vortex, so that gas flowing is more managed
Think.
But technology the problem of existing is that in fan blade rotation process, the vortex between adjacent saw-tooth can interfere,
So as to influence air-out distance and air output.Also, the generation of interference can cause gas movement disorder, relaxed so as to influence the soft of wind
Adaptive.
Utility model content
The utility model is intended at least solve one of technical problem present in prior art or correlation technique.
One of purpose of the present utility model is：A kind of fan blade, fan and double fan blade fans are provided, solve prior art
Present in fan blade edge eddy generation is interfered windward, not only influence air-out distance and air output, and reduce the soft comfortable of wind
The problem of property.
In order to realize the purpose, the utility model provides a kind of fan blade, and edge is in Wave curved shape windward for it, and along institute
The blade root of fan blade is stated to the direction of blade tip, the edge windward gradually tilts toward the rotation direction of the fan blade.
The technical solution of the utility model has advantages below：Fan blade of the present utility model, due to it, edge is in wave windward
Shaped form, so as to form multiple vortex at edge windward, reduce the noise of fan blade.On this basis, due to along the fan blade
Blade root on the direction of blade tip, the edge windward gradually tilts toward the rotation direction of the fan blade, so as to fan blade rotation process
In, the multiple vortex formed windward at edge can not interfere organically towards the motion of wheel hub blade root.Thus, the fan blade goes out
Wind apart from it is farther, air output is bigger, and can more meet requirement of the user to the soft comfortableness of air-out.
Preferably, fan blade of the present utility model, blade tip one end of the edge windward is in hook-shaped.
Preferably, the edge windward smoothly transits from the blade root to the blade tip.
Preferably, the edge windward includes two troughs and a crest, and two troughs are respectively formed in described meet
1/3 opening position and 2/3 opening position of wind edge length, the crest are formed at 1/2 opening position of the edge length windward.
The utility model also provides a kind of fan, including wheel hub and the fan blade on the wheel hub, the fan blade are adopted
With the fan blade described in above-mentioned any one.
The utility model also provides a kind of double fan blade fans, including wheel hub, internal layer fan blade and outer layer fan blade, the internal layer wind
Leaf and the outer layer fan blade rotate under wheel hub drive, and the internal layer fan blade is using the fan blade described in above-mentioned any one.
Preferably, the internal layer fan blade and the outer layer fan blade cross-distribution.
Preferably, it is provided with the internal layer fan blade and/or the outer layer fan blade along the circumferentially extending of the wheel hub
Reinforcement.
Preferably, the foldable gathering of the outer layer fan blade or detachable.
Preferably, the outer layer fan blade is the fan blade described in above-mentioned any one.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of double fan blade fans of prior art；
Fig. 2 is the structural representation of the internal layer fan blade of double fan blade fans in Fig. 1；
Fig. 3 is the structural representation of the double fan blade fans of another kind of prior art；
Fig. 4 is the structural representation of the fan blade edge windward of double fan blade fans in Fig. 3；
Fig. 5 is the structural representation of double fan blade fans of embodiment；
Fig. 6 is the structure of internal layer fan blade and installation relation schematic diagram in Fig. 5；
Fig. 7 be show crest, trough double fan blade fans structural representation；
Fig. 8 is double fan blade fans and the contrast schematic diagram of double fan blade fans in the prior art in Fig. 5；
In figure：1st, internal layer fan blade；2nd, outer layer fan blade；3rd, wheel hub；4th, edge windward.
Embodiment
In order to be more clearly understood that above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the accompanying drawings and tool
The utility model is further described in detail body embodiment.It should be noted that in the case where not conflicting, this Shen
The feature in embodiment and embodiment please can be mutually combined.
, it is necessary to explanation in description of the present utility model, term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than instruction
Or imply that signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that
For to limitation of the present utility model.In addition, term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that
Instruction implies relative importance.
, it is necessary to illustrate in description of the present utility model, unless otherwise clearly defined and limited, term " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary.For this
For the those of ordinary skill in field, concrete meaning of the above-mentioned term in the utility model can be understood with concrete condition.
The fan blade of the present embodiment, edge 4 is in Wave curved shape windward for it, and along the blade root of the fan blade to the direction of blade tip
On, the edge windward 4 gradually tilts toward the rotation direction of the fan blade.
Due to fan blade, edge 4 is in Wave curved shape windward, so as to form multiple vortex at edge 4 windward, reduces noise.
On the basis of this, because on the direction of the blade root along the fan blade to blade tip, the edge windward 4 is gradually toward the rotation of the fan blade
Direction tilts, so as to which the multiple vortex in fan blade rotation process, formed windward at edge 4 can be moved organically towards the blade root of wheel hub 3
Do not interfere.Thus, the air-out of the fan blade apart from it is farther, air output is bigger, and can more meet that user is soft to air-out
The requirement of comfortableness.
The fan blade of the present embodiment is illustrated by taking double fan blade fans as an example below, it should be appreciated that the present embodiment
Fan blade, it is not limited to that use on double fan blade fans, can be applicable to general fan.
Fig. 5, double fan blade fans of the present embodiment, including wheel hub 3, internal layer fan blade 1 and outer layer fan blade 2 are referred to, it is described interior
Layer fan blade 1 and the outer layer fan blade 2 rotate under the drive of wheel hub 3.Wherein, the edge windward 4 of internal layer fan blade 1 is in Wave curved
Shape, and along the blade root of the internal layer fan blade 1 to the direction of blade tip, the edge windward 4 gradually turns toward the internal layer fan blade 1
Dynamic direction tilts.
Herein, the edge windward 4 of internal layer fan blade 1 namely the face wind side of internal layer fan blade 1 is referred to, that is, 1 turn of internal layer fan blade
During dynamic, close to the side of the rotation direction of internal layer fan blade 1.For example, after if internal layer fan blade 1 were installed on wheel hub 3, wheel hub
3 drive internal layer fan blade 1 rotationally clockwise, then the close clockwise side of internal layer fan blade 1 is exactly internal layer fan blade 1
Edge 4 windward.In Fig. 5, wheel hub 3 rotates clockwise, so as to which the edge windward 4 of internal layer blade is referred in Fig. 5 close to side clockwise
To side.
In addition, above-mentioned " edge 4 is in Wave curved shape windward " means the internal layer fan blade 1 of the present embodiment, it is different from accompanying drawing 2
In internal layer fan blade 1 edge 4 windward.Obviously, the internal layer fan blade 1 in Fig. 2, although edge 4 is in bending windward for it, but do not have
" wave " structure.And in the present embodiment, because the edge windward 4 of internal layer fan blade 1 is in Wave curved shape, so as in shape at edge 4 windward
Into multiple rather than single vortex.
On this basis, because along the blade root of the internal layer fan blade 1 to the direction of blade tip, the edge windward 4 is gradual
Rotation direction toward the internal layer fan blade 1 tilts, so as to the multiple vortex in the rotation process of internal layer fan blade 1, formed windward at edge 4
It can not interfered towards the motion of the blade root of wheel hub 3 organically.Thus, the air-out of the internal layer fan blade 1 apart from farther, air output more
Greatly, requirement of the user to the soft comfortableness of air-out and can more be met.
It should be noted that " along the blade root of the internal layer fan blade 1 to the direction of blade tip, the edge windward 4 is gradually past
The rotation direction of the internal layer fan blade 1 tilts " what is referred to is the variation tendency of edge 4 windward, it can ensure in shape on edge 4 windward
Into multiple vortex have towards internal layer fan blade 1 blade root motion trend.
And referring to double fan blade fans in accompanying drawing 3, it is clear that the variation tendency of its edge 4 windward is complicated, so as to cause vortex mutual
Easily interfered between phase, finally under the influence of interference so that the air-out of internal layer fan blade 1 distance reduces, air quantity reduces and
Air-out comfortableness is not good enough.
Further, Fig. 4 is referred to, edge 4 and same diameter have multiple intersection points to existing internal layer fan blade 1 windward.This meaning
, along the blade root of the internal layer fan blade 1 to the direction of blade tip, tilted counterclockwise during edge 4 windward, Shi Erxiang is suitable
Clockwise is cut tiltedly.Thus, windward at edge 4 caused by vortex in, have some have the blade root of inner layer fan blade 1 move become
Gesture, other have the trend of the blade tip motion of inner layer fan blade 1, and can be interfered between heterodromous vortex.
But double fan blade fans of the present embodiment, the edge windward 4 of its internal layer fan blade 1 and the radius of process wheel axis center are all the time
The variation tendency of edge windward 4 of internal layer fan blade 1 is single in only an intersection point, namely the present embodiment, so as to ensure that in edge 4 windward
The vortex of formation has same movement tendency.As shown in fig. 6, three processes edge 4 and the central shaft of wheel hub 3 windward are given in Fig. 6
Radius, it is clear that with windward on edge 4 any point draw by the point radius, the radius and windward edge 4 forever all only have one
Intersection point.
In Fig. 6, circumference of the internal layer fan blade 1 along wheel hub 3 is uniformly distributed, so as to ensure that the uniformity of air-out.Certainly, it is attached
Fig. 6 does not form the limitation of the installation to the internal layer fan blade 1 of the present embodiment.And understand that outer layer fan blade 2 passes through internal layer with reference to Fig. 5
Fan blade 1 is fixed, so that outer layer fan blade 2 rotates together with internal layer fan blade 1.Also, it is preferred that outer layer fan blade 2 and internal layer
1 cross-distribution as shown in Figure 5 of fan blade.
In the present embodiment, in order to ensure the structural strength of double fan blade fans, preferably internal layer fan blade 1 and/or the outer layer wind
The reinforcement (not shown) of the circumferentially extending along the wheel hub 3 is provided with leaf 2.
In addition, for the ease of packing, transporting, the damage of outer layer fan blade 2 is prevented, double fan blade fans of the present embodiment, its
2 foldable gathering of outer layer fan blade, so as to when outer layer fan blade 2 need not be used, by outer layer fan blade 2 towards the center side of wheel hub 3
To folding, to reduce the space that this pair of fan blade fan takes.Or outer layer fan blade 2 is detachable, so as to which outer layer fan blade 2 be dismantled
Get off to be easy to pack, transport, and after outer layer fan blade 2 removes, this pair of fan blade fan is that is, an individual layer
The simple structure fan of fan blade.
Wherein, preferably the Wave curved shape of edge 4 smoothly transits from the blade root of the fan blade to blade tip windward, so as to ensure
Fan blade it is attractive in appearance while, improve double-deck fan blade aeroperformance.
In order that obtaining internal layer fan blade 1 obtains more preferable wind cutting effect, preferably blade tip one end of edge 4 is in hook-shaped windward, please be joined
See Fig. 7.
Fig. 7 is referred to, a kind of design of preferable internal layer fan blade 1 is given in the present embodiment.Specifically, internal layer wind
The edge windward 4 of leaf 1 includes two troughs and a crest.It is found through experiments that, it is assumed that the diameter point of circumference where two troughs
Wei not d1And d1', a diameter of d of circumference where crest2, then work as d1/ 2=(0.5~0.8) R1, d1'/2=(1.2~1.5)
R1, and d2/ 2=(0.9~1.1) R1When, the structure of the internal layer fan blade 1 now obtained is more reasonable.Wherein, R1For the internal layer
The height of fan blade 1.If the diameter of circumference is defined as D where the external diameter of internal layer fan blade 1, the diameter of wheel hub 3 is defined as d, then R1=
(D-d)/2.Further, respectively positioned at 1/3 and 2/3 opening position of the total length of edge 4 windward, crest is located at meets preferably two troughs
1/2 opening position of the total length of wind edge 4.
Double fan blade fans of double fan blade fans of the present embodiment and prior art are contrasted, refer to Fig. 8.It is not difficult to send out
It is existing, by carrying out Partial Resection to the internal layer fan blade 1 of existing double fan blade fans, it is possible to obtain double fan blade fans of the present embodiment
Internal layer fan blade 1 structure.And the internal layer fan blade 1 that Partial Resection obtains is carried out, it loads situation about not cutting off relatively and substantially
It is small, so as to also may be such that the lifting of air quantity by a small margin to a certain extent.
In Fig. 8, it is assumed that each crest of internal layer fan blade 1 is a relative to the distance of original internal layer fan blade 11, a2……an(n
>=1), each trough of internal layer fan blade 1 is b relative to the distance of original fan blade1, b2……bn(n >=1), bnWith anRatio delta determine
Justice is the degree of convexity of internal layer fan blade 1, there is 1≤δ≤3.Simply show in the accompanying drawing of the present embodiment trough be two, crest be
The situation of one, namely only exist a1, a2And b1, as described in Figure 8, it is clear that the edge windward of the internal layer fan blade 1 in the present embodiment
4, the quantity of its Wave crest and wave trough is not limited by the accompanying figures.
Above-mentioned double fan blade fans, the edge windward 4 of the Wave curved shape of internal layer fan blade 1 are to use for reference hawk wing or other birds
The structure of wing, and the internal layer fan blade in accompanying drawing, it is tilted from blade root to blade tip to direction windward, the inclination angle of its edge windward
Degree is more than the angle of inclination of leeward edge, so that internal layer fan blade is in integrally wing-shaped.Formed windward at edge 4 in internal layer fan blade 1
Some depressions and projection.When fan blade rotates clockwise, air-flow first flow through internal layer fan blade 1 windward 4 position of edge when, due to windward
The biomimetic features of the hawk wing of the position of edge 4, on the one hand cause more airflow passes internal layer fan blades 1 edge 4 windward；On the other hand
Air-flow forms multiple vortex when flowing through biomimetic features, and an original maelstrom also is decomposed into several small vortex, this
Ability contained by the small vortex of kind separation is less, and broken caused aerodynamic noise is relatively low, so as to reduce the vortex noise of fan blade.
In addition, windward blade tip one end of edge 4 in hook-shaped, so as to the blade tip of internal layer fan blade 1 be located proximate to edge 4 windward side formed it is hook-shaped
Structure.The hook formation can be remarkably reinforced the wind cutting effect near the blade tip of internal layer fan blade 1, obtain preferably air-supply experience.
Certainly it should be noted that double fan blade fans of the present embodiment, the structure of its internal layer fan blade are not limited by the accompanying figures.
For example, the angle of inclination of internal layer fan blade edge windward might be less that the angle of leeward edge, so that internal layer fan blade is in integrally class
Like sickleshaped.Also, on the basis of the determination of edge shape windward, the shape of leeward edge is unrestricted, it, which can be used, arbitrarily may be used
Capable shape.
By experimental results demonstrate, edge 4 designs the fan blade in the present embodiment windward, and it can promote the accelerated motion of air-flow,
So that the air-flow wind speed of internal layer fan blade 1 is bigger, the air-flow that flows to fan blade is more, while the effect for reducing noise can be played.
Under conditions of air quantity, using double fan blade fans of the present embodiment, its complete machine noise makes a farfetched comparison double wind in Fig. 1 and 2
Blade fan noise is low.Certainly, specific air quantity noise improvement effect is relevant with fan blade quantity and fan blade external diameter, in general fan blade
Number is more, external diameter is bigger, and air quantity lifting and noise reducing effect are more notable.
Embodiment of above is merely to illustrate the utility model, rather than to limitation of the present utility model.Although with reference to implementation
The utility model is described in detail example, it will be understood by those within the art that, to technology of the present utility model
Scheme carries out various combinations, modification or equivalent substitution, all should without departure from the spirit and scope of technical solutions of the utility model
Cover among right of the present utility model.
Claims (10)
- A kind of 1. fan blade, it is characterised in that the edge windward of the fan blade extends in Wave curved shape, and along the leaf of the fan blade To on the direction of blade tip, the edge windward gradually tilts root toward the rotation direction of the fan blade.
- 2. fan blade according to claim 1, it is characterised in that blade tip one end of the edge windward is in hook-shaped.
- 3. fan blade according to claim 1, it is characterised in that the edge windward is from the blade root to the smooth mistake of the blade tip Cross.
- 4. fan blade according to claim 3, it is characterised in that the edge windward includes two troughs and a crest, and two The individual trough is respectively formed in 1/3 opening position and 2/3 opening position of the edge length windward, and the crest is formed at described meet 1/2 opening position of wind edge length.
- 5. a kind of fan, including wheel hub and the fan blade on the wheel hub, it is characterised in that the fan blade will using right Seek the fan blade described in any one in 1 to 4.
- 6. a kind of double fan blade fans, including wheel hub, internal layer fan blade and outer layer fan blade, the internal layer fan blade and the outer layer fan blade exist The wheel hub drives lower rotate, it is characterised in that the internal layer fan blade is the fan blade described in any one in Claims 1-4.
- 7. double fan blade fans according to claim 6, it is characterised in that the internal layer fan blade and the outer layer fan blade intersect Distribution.
- 8. double fan blade fans according to claim 6, it is characterised in that the internal layer fan blade and/or the outer layer fan blade On be provided with the reinforcement of circumferentially extending along the wheel hub.
- 9. double fan blade fans according to claim 6, it is characterised in that the foldable gathering or removable of outer layer fan blade Unload.
- 10. double fan blade fans according to claim 6, it is characterised in that the outer layer fan blade is in Claims 1-4 Fan blade described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720120414.7U CN206668618U (en) | 2017-02-09 | 2017-02-09 | A kind of fan blade, fan and double fan blade fans |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720120414.7U CN206668618U (en) | 2017-02-09 | 2017-02-09 | A kind of fan blade, fan and double fan blade fans |
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| Publication Number | Publication Date |
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| CN206668618U true CN206668618U (en) | 2017-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720120414.7U Active CN206668618U (en) | 2017-02-09 | 2017-02-09 | A kind of fan blade, fan and double fan blade fans |
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| Country | Link |
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| CN (1) | CN206668618U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109974086A (en) * | 2019-03-29 | 2019-07-05 | 广东美的制冷设备有限公司 | Air guide structure, air conditioner indoor unit and air conditioner |
-
2017
- 2017-02-09 CN CN201720120414.7U patent/CN206668618U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109974086A (en) * | 2019-03-29 | 2019-07-05 | 广东美的制冷设备有限公司 | Air guide structure, air conditioner indoor unit and air conditioner |
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